Littelfuse LGR003U - The Littelfuse® POWR-PRO® JTD_ID Indicator Class J fuse provides visual blown fuse indication and maximum protection in a compact package. The compact Class J package was designed specifically for circuits where space is at a premium. The current limiting time delay JTD_ID offers a patented true dual-element design that is ideal for use in circuits with high inrush currents. Superior performance characteristics of JTD_ID Indicator fuses reduce nuisance fuse opening and the blown fuse indication reduces downtime and increases safety.
Littelfuse

LGR003U

Alternate Item Number: 0LGR003.U

UPC: 079458077377

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Minimum Qty: 500

Multiplier: 500

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Overview

The Littelfuse® POWR-PRO® JTD_ID Indicator Class J fuse (SKU: LGR003U) represents a pinnacle of protective device technology, engineered for demanding industrial and commercial applications where space is at a premium and reliability is paramount. This compact Class J fuse is specifically designed to deliver maximum protection while offering a crucial visual blown fuse indication, significantly streamlining maintenance and enhancing operational safety. Its current-limiting time-delay functionality is powered by a patented true dual-element design, making it exceptionally well-suited for circuits prone to high inrush currents. This advanced design effectively mitigates nuisance fuse openings, a common frustration in systems with transient surges, thereby reducing costly downtime and improving overall equipment uptime. The JTD_ID Indicator fuse's superior performance characteristics are a direct result of Littelfuse's commitment to innovation and quality. The dual-element construction provides distinct time-delay and fast-acting elements, offering optimized protection against both short circuits and overloads. The visual indication feature is a critical differentiator, allowing technicians to quickly identify a blown fuse without the need for complex testing procedures. This immediate visibility translates directly into faster troubleshooting, reduced labor costs, and a safer working environment by minimizing the time equipment remains unprotected or in a potentially hazardous state. Key benefits and features of the Littelfuse POWR-PRO JTD_ID Indicator Class J fuse include: * **Visual Blown Fuse Indication:** Provides clear, immediate visual confirmation of a blown fuse, simplifying diagnostics and reducing downtime. * **Compact Class J Package:** Ideal for space-constrained applications, ensuring robust protection without compromising panel real estate. * **Patented True Dual-Element Design:** Offers superior time-delay performance, effectively handling high inrush currents and preventing nuisance openings. * **Current Limiting:** Protects downstream components from damaging short-circuit currents. * **Enhanced Safety:** Reduces the risk of electrical hazards associated with prolonged equipment downtime or improper fuse identification. * **Reliability:** Backed by Littelfuse's reputation as a global leader in circuit protection solutions. This fuse is an excellent choice for a wide array of applications, including motor control circuits, transformers, power distribution panels, and other industrial equipment where reliable overcurrent protection is essential. The ability to quickly identify and replace a blown fuse is critical in maintaining the continuous operation of vital industrial processes. By minimizing downtime and enhancing safety, the Littelfuse JTD_ID Indicator fuse contributes directly to improved productivity and reduced operational expenses. Professionals rely on Littelfuse for high-quality, dependable circuit protection devices that meet stringent industry standards and deliver exceptional performance under challenging conditions. The JTD_ID Indicator Class J fuse exemplifies this commitment, offering a robust and intelligent solution for modern electrical protection needs.
  • Littelfuse POWR-PRO JTD_ID Indicator Class J fuse for superior overcurrent protection.
  • Features visual blown fuse indication for quick identification and reduced downtime.
  • Patented true dual-element design ideal for circuits with high inrush currents.
  • Compact Class J package designed for space-constrained applications.
  • Current-limiting time-delay fuse minimizes nuisance openings and enhances safety.

Specifications

Application
Lighting
Brand Name
Littelfuse
Special Features
Fast-Acting
Standard
Standard 248-14 UL Listed/CSA
Sub Brand
LGR Series
Type
InLine Fuse
Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount

GPM-SRR90

Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.